clewis@eci386.uucp (Chris Lewis) (01/16/90)
Is there any way to set the display format for numbers in format lines?
Assigning "%.2g" to $# (after selecting the handling associated with the
stream) doesn't appear to affect anything and things are printed with
more than 2 decimal places.
--
Chris Lewis, Elegant Communications Inc, {uunet!attcan,utzoo}!lsuc!eci386!clewis
Ferret mailing list: eci386!ferret-list, psroff mailing list: eci386!psroff-listlwall@jpl-devvax.JPL.NASA.GOV (Larry Wall) (01/16/90)
In article <1990Jan15.185922.20098@eci386.uucp> clewis@eci386 (Chris Lewis) writes:
: Is there any way to set the display format for numbers in format lines?
No.
: Assigning "%.2g" to $# (after selecting the handling associated with the
: stream) doesn't appear to affect anything and things are printed with
: more than 2 decimal places.
Maybe it should work this way--I haven't thought about it. Or maybe we
need numeric "pictures".
For the time being, just slap an sprintf around the variable name.
Larryjfh@rpp386.cactus.org (John F. Haugh II) (01/17/90)
In article <6798@jpl-devvax.JPL.NASA.GOV> lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall) writes: I-In article <1990Jan15.185922.20098@eci386.uucp> clewis@eci386 (Chris Lewis) writes: n-: Is there any way to set the display format for numbers in format lines? e- w-No. s- --: Assigning "%.2g" to $# (after selecting the handling associated with the n-: stream) doesn't appear to affect anything and things are printed with o-: more than 2 decimal places. i- s-Maybe it should work this way--I haven't thought about it. Or maybe we e-need numeric "pictures". Perhaps a function "picture" that takes two arguments - the first a number, either floating point or integer, and a picture string. The function formats the number according to the picture string. [ Anyone familiar with INFORMIX[tm] RDBMS can quit now ... ] The format characters would be < - left justify numeric # - blank-fill numeric & - zero-fill numeric * - star-fill numeric [ for bank drafts, etc ] , - literal comma, unless a space is to the left . - literal decimal point $ - dollar sign in first blank left of number () - show sign ala accounting statements - - [ minus sign ] blank for positive, '-' for negative + - '+' for positive, '-' for negative The values and pictures below would give the following results - value "$<,<<&.##" "#,###.##" "*,***.##" "&&&&" 0.01 -> "$0.01" " .01" "*****.01" "0000" 0.12 -> "$0.12" " .12" "*****.12" "0000" 1.23 -> "$1.23" " 1.23" "****1.23" "0001" 12.34 -> "$12.34" " 12.34" "***12.34" "0012" 123.45 -> "$123.45" " 123.45" "**123.45" "0123" 1234.56 -> "$1,234.56" "1,234.56" "1,234.56" "1234" -- John F. Haugh II UUCP: ...!cs.utexas.edu!rpp386!jfh Ma Bell: (512) 832-8832 Domain: jfh@rpp386.cactus.org
clewis@eci386.uucp (Chris Lewis) (01/18/90)
In article <6798@jpl-devvax.JPL.NASA.GOV> lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall) writes: > In article <1990Jan15.185922.20098@eci386.uucp> clewis@eci386 (Chris Lewis) writes: | > [regarding trying to set numeric display formats, and $# doesn't work.] | : Assigning "%.2g" to $# (after selecting the handling associated with the | : stream) doesn't appear to affect anything and things are printed with | : more than 2 decimal places. | Maybe it should work this way--I haven't thought about it. Or maybe we | need numeric "pictures". If I had my druthers (then again, it's your code not mine ;-), I'd prefer numeric pictures, and *not* have $# take effect. Numeric pictures have the risk of turning Perl into Cobol (yuck ;-), but a small increment would greatly improve perl's use in a variety of things - primarily decimal point placement. Eg: @>>>>>>.>> | For the time being, just slap an sprintf around the variable name. That's what I did. Thank you! (for this, and everything else) -- Chris Lewis, Elegant Communications Inc, {uunet!attcan,utzoo}!lsuc!eci386!clewis Ferret mailing list: eci386!ferret-list, psroff mailing list: eci386!psroff-list
allbery@NCoast.ORG (Brandon S. Allbery) (01/19/90)
As quoted from <17678@rpp386.cactus.org> by jfh@rpp386.cactus.org (John F. Haugh II): +--------------- | Perhaps a function "picture" that takes two arguments - the first a | number, either floating point or integer, and a picture string. The | function formats the number according to the picture string. +--------------- I already have PD code to do this, if someone would like a starting point. ++Brandon -- Brandon S. Allbery allbery@NCoast.ORG, BALLBERY (MCI Mail), ALLBERY (Delphi) uunet!cwjcc.cwru.edu!ncoast!allbery ncoast!allbery@cwjcc.cwru.edu *(comp.sources.misc mail to comp-sources-misc[-request]@backbone.site, please)* *Third party vote-collection service: send mail to allbery@uunet.uu.net (ONLY)*